Yes, Chinas Agate Onyx can be used in a dining room. These stones are often used as decorative pieces in the form of tabletops or decorative plates and can add a touch of elegance and luxury to any dining room. However, it is important to note that Agate Onyx is a relatively soft stone compared to other natural stones such as granite or marble, which means it may require more care and maintenance to keep it looking its best.